R gives the capability of creating many graphical displays. These displays are used to view data in an easier and more concise way. In other words, graphs can help us make better sense of what happens ...

Statistician Howard Wainer and psychologist Michael Friendly are numbers magicians — they make the invisible visible. Two of the world’s leading figures in the field of data visualization, they are co ...

Assessment of course quality, student learning, and professor effectiveness has become paramount in many of today’s universities and colleges. We seem always to strive for a better way to assess our ...

Complex images such as graphs and charts make it easy to represent trends and complex data relationships to visual users. Other complex images can include diagrams and illustrations that require a ...

In this section, we use the dataset cargame.csv to demonstrate how to create basic graphical displays in Python. Below is the scenario for the data: A toy company has four types of vehicles for sale: ...